Privatecarshavebecomeanimportantaspectofpeople'slifeinmanypartsofourcountry,especiallyinlargecitiessuchasBeijing,ShanghaiandGuangzhou.Whiletheybringmuchconveniencetopeople,theyarealsowidelycriticized.Therearesomeargumentsforowningprivatecars.Inthefirstplace,carsallowpeopletomovearoundfreely,whichgreatlyimprovesourlivingstandard.Wecaneasilydrivecarsforsightseeingonweekends.Inthesecondplace,carsareacomfortablewaytotravel,especiallyinbadweather.Lastbutnotleast,thecarindustrycanboosteconomybycreatingmanyjobopportunitiesinproductionofsteel,rubber,glassandsoon.However,therearealsomanygoodargumentsagainstcars.Firstofall,theypollutetheenvironmentbyemittingharmfulgasesandgivingoutloudnoises.Inaddition,carscausealargenumberoftrafficaccidents,whichbringgreatmiserytothevictims'families.AsfarasIamconcerned,weshouldlimitthenumberofprivatecarsbyprovidingbettermasstransportationandbetterserviceforthepeople.Everyoneshouldsacrificehisorherowninterestforthecommongoodofthesociety.